安然官方网站登录:〔求救〕2道数学题~
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№7
http://photo.163.com/photos/maoligmao/42707536/1145197369/
№8
http://photo.163.com/photos/maoligmao/42707536/1145200105/
http://photo.163.com/photos/maoligmao/42707536/1145197369/
№8
http://photo.163.com/photos/maoligmao/42707536/1145200105/
c d
7:d
8:c
是用maple做的